单项选择题
A.Steel brush B.Fine emery cloth or steel wool C.A section of the removed compression ring D.A case hardened scraper
The main source of fuel injection system malfunctions i...
单项选择题The main source of fuel injection system malfunctions is （）
A.improper adjustments B.contaminated fuel C.coated fuel lines D.excessive vibration
The most crucial time for any bearing with regards to l...
单项选择题The most crucial time for any bearing with regards to lubrication is （）
A.during low loads B.after proper oil viscosity is reached C.during starting D.after cleaning filters
If a main propulsion diesel engine hunts excessively at...
单项选择题If a main propulsion diesel engine hunts excessively at idle speed, you should （）
A.adjusts the idle speed control B.drain and flushes the governor and replace the oil C.adjusts the compensating needle valve
